The precise origin of the cowbell as a fixture of Mississippi State sports tradition remains unclear to this day. The best records have cowbells gradually introduced to the MSU sports scene in the late 1930s and early 1940s, coinciding with the 'golden age' of Mississippi State football success prior to World War II. The most popular legend is that during a home football game between State and arch-rival Mississippi, a jersey cow wandered onto the playing field. Mississippi State soundly whipped the Rebels that Saturday, and State College students immediately adopted the cow as a good luck charm. Students are said to have continued bringing a cow to football games for a while, until the practice was eventually discontinued in favor of bringing just the cow's bell.